Renum 9.x tty and su checks

renamed:    bin/hardening/9.4_secure_tty.sh -> bin/hardening/5.5_secure_tty.sh
	renamed:    bin/hardening/9.5_restrict_su.sh -> bin/hardening/5.6_restrict_su.sh
	renamed:    tests/hardening/9.5_restrict_su.sh -> tests/hardening/5.5_secure_tty.sh
	renamed:    tests/hardening/9.4_secure_tty.sh -> tests/hardening/5.6_restrict_su.sh

bin/hardening/5.5_secure_tty.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+#
+# CIS Debian Hardening
+#
+
+#
+# 5.5 Ensure root login is restricted to system console (Not Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+HARDENING_LEVEL=3
+DESCRIPTION="Restrict root login to system console."
+
+FILE='/etc/securetty'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    info "Remove terminal entries in $FILE for any consoles that are not in a physically secure location."
+    info "No measure here, please review the file by yourself"
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    info "Remove terminal entries in $FILE for any consoles that are not in a physically secure location."
+    info "No measure here, please review the file by yourself"
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    . /etc/default/cis-hardening
+fi
+if [ -z "$CIS_ROOT_DIR" ]; then
+     echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
+     echo "Cannot source CIS_ROOT_DIR variable, aborting."
+    exit 128
+fi
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
+    . $CIS_ROOT_DIR/lib/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
+    exit 128
+fi